1 files changed, 122 insertions, 0 deletions
diff --git a/cmd.h b/cmd.h
new file mode 100644
index 0000000000..9eb4a8f79d
--- /dev/null
+++ b/cmd.h
@@ -0,0 +1,122 @@
+/* $Header: cmd.h,v 1.0 87/12/18 13:04:59 root Exp $
+ *
+ * $Log:	cmd.h,v $
+ * Revision 1.0  87/12/18  13:04:59  root
+ * Initial revision
+ * 
+ */
+
+#define C_NULL 0
+#define C_IF 1
+#define C_WHILE 2
+#define C_EXPR 3
+#define C_BLOCK 4
+
+#ifndef DOINIT
+extern char *cmdname[];
+#else
+char *cmdname[] = {
+    "NULL",
+    "IF",
+    "WHILE",
+    "EXPR",
+    "BLOCK",
+    "5",
+    "6",
+    "7",
+    "8",
+    "9",
+    "10",
+    "11",
+    "12",
+    "13",
+    "14",
+    "15",
+    "16"
+};
+#endif
+
+#define CF_OPTIMIZE 077	/* type of optimization */
+#define CF_FIRSTNEG 0100/* conditional is ($register NE 'string') */
+#define CF_NESURE 0200	/* if first doesn't match we're sure */
+#define CF_EQSURE 0400	/* if first does match we're sure */
+#define CF_COND	01000	/* test c_expr as conditional first, if not null. */
+			/* Set for everything except do {} while currently */
+#define CF_LOOP 02000	/* loop on the c_expr conditional (loop modifiers) */
+#define CF_INVERT 04000	/* it's an "unless" or an "until" */
+#define CF_ONCE 010000	/* we've already pushed the label on the stack */
+#define CF_FLIP 020000	/* on a match do flipflop */
+
+#define CFT_FALSE 0	/* c_expr is always false */
+#define CFT_TRUE 1	/* c_expr is always true */
+#define CFT_REG 2	/* c_expr is a simple register */
+#define CFT_ANCHOR 3	/* c_expr is an anchored search /^.../ */
+#define CFT_STROP 4	/* c_expr is a string comparison */
+#define CFT_SCAN 5	/* c_expr is an unanchored search /.../ */
+#define CFT_GETS 6	/* c_expr is $reg = <filehandle> */
+#define CFT_EVAL 7	/* c_expr is not optimized, so call eval() */
+#define CFT_UNFLIP 8	/* 2nd half of range not optimized */
+#define CFT_CHOP 9	/* c_expr is a chop on a register */
+
+#ifndef DOINIT
+extern char *cmdopt[];
+#else
+char *cmdopt[] = {
+    "FALSE",
+    "TRUE",
+    "REG",
+    "ANCHOR",
+    "STROP",
+    "SCAN",
+    "GETS",
+    "EVAL",
+    "UNFLIP",
+    "CHOP",
+    "10"
+};
+#endif
+
+struct acmd {
+    STAB	*ac_stab;	/* a symbol table entry */
+    ARG		*ac_expr;	/* any associated expression */
+};
+
+struct ccmd {
+    CMD		*cc_true;	/* normal code to do on if and while */
+    CMD		*cc_alt;	/* else code or continue code */
+};
+
+struct cmd {
+    CMD		*c_next;	/* the next command at this level */
+    ARG		*c_expr;	/* conditional expression */
+    CMD		*c_head;	/* head of this command list */
+    STR		*c_first;	/* head of string to match as shortcut */
+    STAB	*c_stab;	/* a symbol table entry, mostly for fp */
+    SPAT	*c_spat;	/* pattern used by optimization */
+    char	*c_label;	/* label for this construct */
+    union ucmd {
+	struct acmd acmd;	/* normal command */
+	struct ccmd ccmd;	/* compound command */
+    } ucmd;
+    short	c_flen;		/* len of c_first, if not null */
+    short	c_flags;	/* optimization flags--see above */
+    char	c_type;		/* what this command does */
+};
+
+#define Nullcmd Null(CMD*)
+
+EXT CMD *main_root INIT(Nullcmd);
+
+EXT struct compcmd {
+    CMD *comp_true;
+    CMD *comp_alt;
+};
+
+#ifndef DOINIT
+extern struct compcmd Nullccmd;
+#else
+struct compcmd Nullccmd = {Nullcmd, Nullcmd};
+#endif
+void opt_arg();
+void evalstatic();
+STR *cmd_exec();